The stomach 9 point is located directly over the carotid sinus, and the
bifurcation of the carotid arteries. Over stimulation of the carotid sinus
is associated with both cardiac arrest and vasovagal fainting. Thus, attacking this
point can stimulate the carotid sinus leading to a knockout or cardiac arrest.
In addition, the carotid artery bifurcation is where the
greatest buildup of artherosclerotic plaque occurs. Because of this, striking
this area can cause a piece of plaque to break off and travel to the brain
resulting in a stroke. Furthermore, blunt trauma to this area has been extensively
discussed in
the medical literature and there are many cases of blunt trauma causing a
stroke, neurological deficits, and/or death. Interestingly, these effects can
be instant or delayed. In fact, up to 80% of blunt carotid artery trauma results in
delayed neurological impairment. The scary part is that these effects can
occur up to ten years later.